MY130988A - Sharpness improvement. - Google Patents

Sharpness improvement.

Info

Publication number
MY130988A
MY130988A MYPI97004910A MYPI9704910A MY130988A MY 130988 A MY130988 A MY 130988A MY PI97004910 A MYPI97004910 A MY PI97004910A MY PI9704910 A MYPI9704910 A MY PI9704910A MY 130988 A MY130988 A MY 130988A
Authority
MY
Malaysia
Prior art keywords
sharpness
sharpness improvement
ctrl
control signal
image signal
Prior art date
Application number
MYPI97004910A
Inventor
Michel Wouter Nieuwenhuizen
Leendert Albertus Dick Van Den Broeke
Maarten Wilhelmus Henricus Marie Van Dommelen
Original Assignee
Koninkl Philips Electronics Nv
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Publication of MY130988A publication Critical patent/MY130988A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/77—Circuits for processing the brightness signal and the chrominance signal relative to each other, e.g. adjusting the phase of the brightness signal relative to the colour signal, correcting differential gain or differential phase
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals
    • H04N9/646—Circuits for processing colour signals for image enhancement, e.g. vertical detail restoration, cross-colour elimination, contour correction, chrominance trapping filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)
  • Color Image Communication Systems (AREA)
  • Picture Signal Circuits (AREA)

Abstract

IN A SHARPNESS-IMPROVING METHOD, THE PRESENCE OF PREDETERMINED COLORS (R, M) IN AN IMAGE SIGNAL (Y-IN, U-IN, V-IN) IS DETERMINED (7) TO OBTAIN A CONTROL SIGNAL (CTRL), AND A SHARPNESS OF THE IMAGE SIGNAL (Y-IN, U-IN, V-IN) IS ENHANCED (1-5) IN DEPENDENCE UPON THE CONTROL SIGNAL (CTRL).(FIG. 1)
MYPI97004910A 1996-10-21 1997-10-17 Sharpness improvement. MY130988A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP96202924 1996-10-21
EP97200705 1997-03-10

Publications (1)

Publication Number Publication Date
MY130988A true MY130988A (en) 2007-07-31

Family

ID=26143264

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI97004910A MY130988A (en) 1996-10-21 1997-10-17 Sharpness improvement.

Country Status (5)

Country Link
EP (1) EP0868817A2 (en)
JP (1) JP2000502548A (en)
KR (1) KR19990076726A (en)
MY (1) MY130988A (en)
WO (1) WO1998018263A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100780724B1 (en) * 2001-11-14 2007-11-30 주식회사 엘지이아이 Sharpness enhancement apparatus for dtv

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5267028A (en) * 1988-08-26 1993-11-30 Canon Kabushiki Kaisha Solid state image pickup apparatus having luminance control
JP2722784B2 (en) * 1990-06-12 1998-03-09 松下電器産業株式会社 Color imaging device
JPH07231396A (en) * 1993-04-19 1995-08-29 Mitsubishi Electric Corp Picture quality correction circuit

Also Published As

Publication number Publication date
WO1998018263A2 (en) 1998-04-30
WO1998018263A3 (en) 1998-06-18
KR19990076726A (en) 1999-10-15
EP0868817A2 (en) 1998-10-07
JP2000502548A (en) 2000-02-29

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